I believe because water drops coming down thru the cold air is too big
to freeze or become snow. Here they banned studded tires due to road
surface damage it causes. Good winter tires like Blizzak is really good
but it wears like crazy. Barely it lasts two seasons. We usually depend
on Michellin X Ice from Costco. Mine is due for new set next year.
traction lasts longer than Blizzaks - might be a WEE bit poorer the
first year, but better the second, and definitely the third and
forth.. Had the Blizzaks on daughters colt, Graspics on her neon,
Wife's Mistique, my TransSport, my PT Cruizer, and now my Ranger. Just
a set of Tiger Paw Touring All Seasons on my wife's Taurus - but if it
snows badly she doesn't need to go anywhere - she's retired now.
If we HAVE to go somewhere we take the truck.
All precipitation begins as snow crystals in a cloud. In order for snow to
remain as snow all the way to the ground, it must never pass through a
layer of above-freezing air that is deep enough to melt it. That "deep
enough" criteria explains why we get snow when it's 35*.
If the layer of 35* air is very close to the ground then it will not be
deep enough to melt the snow before it hits the ground. The term "very
close" is relative. The colder the upper layers of air are, the "deeper"
the layer of warm air near the ground must be before the snow will turn to
Under these circumstances, the air close to the ground is colder
than the air aloft. Rain can fall through the colder air.
Snow forms under specific conditions, which aren't present at
29 F on the ground.
The air aloft is colder than the air near the ground.
The snow falls quickly enough that it doesn't entirely
melt on its way down.
Actually, freezing rain can't "fall" on anything.
In a nutshell...
All precipitation basically starts out as snow crystals inside of a cloud.
What happens after the crystals leave the cloud determines what we get at
If the crystals pass through air that stays below freezing from the cloud
to the ground, it remains as snow all the way to the ground and we have to
If the crystals pass through air that is warm enough to melt it and that
warm layer extends all the way to the ground, it remains as rain and we get
If the crystals pass through air that is warm enough to melt it, but there
is a very shallow layer of air that is below freezing close to ground
level, the rain freezes when it lands on the sub-freezing surface of trees,
cars, roads, etc. and we slide off the road, lose power due to downed
If the crystals pass through air that is warm enough to melt it and then
pass through air that is cold enough and "deep" enough to refreeze it, we
get hit by little ice pellets that sting our faces.
If the crystals pass through air that is warm enough to melt it and an
updraft sends the water droplets back up into the cloud, the water freezes
on the ice crystals in the cloud, forming an ice pellet. If this "come
down, get wet, go back up and freeze" cycle happens again, the ice pellet
gets a little bigger. If it happens multiple times, and the pellets get
very big, we end up with dented cars, broken windows and headaches.
"All precipitation starts out as ice or snow crystals at cloud level. When
this frozen precipitation falls into a layer of sufficiently warmer air
(with temperatures above freezing) it melts into rain. If this warm air
extends all the way to the surface of the earth, rain will fall at ground
You can read the rest for yourself...I think.
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